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Nuclear Skins and Halos in the Mean-Field Theory

S. Mizutori·J. Dobaczewski·G. A. Lalazissis·W. Nazarewicz·P. -G. Reinhard
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Abstract

Nuclei with large neutron-to-proton ratios have neutron skins, which manifest themselves in an excess of neutrons at distances greater than the radius of the proton distribution. In addition, some drip-line nuclei develop very extended halo structures. The neutron halo is a threshold effect; it appears when the valence neutrons occupy weakly bound orbits. In this study, nuclear skins and halos are analyzed within the self-consistent Skyrme-Hartree-Fock-Bogoliubov and relativistic Hartree-Bogoliubov theories for spherical shapes. It is demonstrated that skins, halos, and surface thickness can be analyzed in a model-independent way in terms of nucleonic density form factors. Such an analysis allows for defining a quantitative measure of the halo size. The systematic behavior of skins, halos, and surface thickness in even-even nuclei is discussed.

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S. Mizutori, J. Dobaczewski, G. A. Lalazissis, W. Nazarewicz, P. -G. Reinhard. 1999-11-17. Nuclear Skins and Halos in the Mean-Field Theory. https://doi.org/10.1103/physrevc.61.044326

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